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C. life D. teaching 12. I can’ t help smiling when I __A__ my childhood. A. think back to B. fall over C. take care of D. give up 13. — How was your vacation there? — Great! Although the weather was __B__, I had a good time there. A. fine B. awful C. sunny D. warm 14. — Are you __A__ about selling your house? — need money. A. serious B. afraid C. strict D. nervous 15. It’ s not polite to __D__ to your teachers. A. talk about B. talk with C. talk to D. talk back 16. I couldn’ t get through the door because there was a big box __C__. A. on the way B. by the way C. in the way D. out of the way 17. — Wow! How beautiful! __D__ flowers are these? — Today is Mother’ s are for you, Mum. A. Who B. Which C. What D. Whose 18. — Would you like to __C__ a concert with us tonight, Mike? — I’ d love to, but I have to look after my ill mother. A. refuse B. agree C. attend D. admire 19. His family are worried about him because they haven’ t __B__ letters from him for a long time. A. accept